Material clamping device

The utility model discloses a material clamping device which comprises a material lifting frame, a fixing plate is fixedly connected to the lower end of the material lifting frame, a lifting platform is arranged at the lower end of the fixing plate, a threaded rod is rotationally connected to the center of one side of the upper surface of the lifting platform, and a supporting seat is rotationally connected to the upper end of the threaded rod. Wherein the threaded rod is in threaded connection with a moving seat, pressing seats are fixedly installed at the two ends of one side of the moving seat, and fixing grooves are formed in the lower ends of the two pressing seats. A hydraulic cylinder is arranged, and under the action of a rotating rod and a positioning rotating rod, a tightening frame is rotated and moved to a limiting groove in a fixing plate, so that the effect of fixing a material lifting frame is achieved; and meanwhile, under the action of an arranged motor and a threaded rod, a movable seat and